A source told NFL Network on Friday morning that tight end Aaron Hernandez did not make the trip to London with the Patriots. Hernandez played the last two weeks after missing time with a high ankle sprain, but he hasn't looked 100 percent despite being productive.

Hernandez's ankle just isn't right at the moment, and he has not recovered from the injury as initially expected, a source who has spoken with the player told NFL.com and NFL Network reporter Albert Breer.

With a bye week coming after the game in London, the Patriots apparently decided to play it safe and try to get Hernandez fully ready for the second half of the season.

Rob Gronkowski has played his best football of the season recently and should be a bigger factor than ever on the offense. Wes Welker leads the NFL in yards and is second in receptions, but he will have a difficult matchup this week with Cortland Finnegan likely taking him from the slot.